//头部
.header{
    height: 44px;
    line-height: 44px;
    text-align: center;
    background-color: white;
}
.content{
    background: url(../img/advertisement-bg.jpg) no-repeat;
    background-size: 1280px;
    background-position: center top;
}
.count-down{
    position: fixed;
    right: 14px;
    top: 74px;
    width: 106px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    border-radius: 20px;
    border: 1px solid rgba(187, 187, 187, 100);
    background-color: white;
}
.slogan{
    position: fixed;
    bottom: 200px;
    left: 50%;
    height: 40px;
    font-size: 30px;
    transform: translateX(-50%);
    line-height: 40px;
    color: white;
    animation: my 3s linear forwards;
}
@keyframes my{
    0%{
        opacity: 0;
        bottom: 200px;
        transform: scale(1.1) translateX(-50%);
    }
    80%{
        bottom: 80px;
        transform: scale(1.2) translateX(-40%);
    }
    100%{
        opacity: 1;
        bottom: 100px;
        transform: scale(1.3) translateX(-35%);
        
    }
}
